17
Reference Manual
00809-0200-4841, Rev BA
December 2014
Section 3: Installation
To connect the transmitter:
1.
Make sure that the power supply is disconnected.
2.
),
taking note of the restricted
voltage of 12 to 30 Vdc for
hazardous area (classified location) applications
.
Note
Other devices may reset if connecting the transmitter to a multi-drop system while the
loop is powered. De-energize loop to avoid devices being reset.
Make sure that the instruments in the loop are installed according to intrinsically-safe
field wiring practices and control drawings, when applicable.
Figure 3-8. Wiring diagram
A. Black: 0 Vdc
B. Red: 12 to 40 Vdc (for non-hazardous area) or 12 to 30 Vdc from protective barrier (for hazardous area)
C. Non-hazardous area: connect cable screen to standard ground (earth) or
hazardous area: connect cable screen to intrinsically safe ground (earth)
D. Remote temperature sensor (3108 only)
3.4.2
Remote temperature sensor (on 3108 only)
The factory-fitted remote temperature sensor on the 3108 may be installed in a hazardous area
without the need for any additional protection or barriers.
Note
“Positioning of the remote temperature sensor (3108 only)” on page 14
.
A
C
B
D
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